On the contrary, I think adding the so called star players would reduce the team efficiency by creating over dependence on those respected players. They have a good squad and I'll love them to keep on keeping up. Alonso is really doing a marvelous job with the boys. I think they're good to go. They did very well last season and I believe they can do really better this season. Over squad destroys a team and I don't want it to be the case with Leverkusen
Exactly my thought: bringing in a star player will affect the squad this season even if they get back their performance; it will be next season because right now the season has already started, and bringing in those players will take them time to develop their performances again. However, Alonso feels balanced and good with his current players, which is why he is not bringing in new players to the team; he knows that the current squad can still do it as they are still strong and in good shape.
But to be able to compete with stronger teams it will be difficult, like Leverkusen who will compete in the Champion League competition this season, I think there needs to be an improvement made by Xabi Alonso but he didn't do it this season.
For Leverkusen's strength this season is still the same as last season, they are still strong but every team should have an increase in quality every season.
And it all comes back to trust, Xabi Alonso is the most trusted person now after his great success in building Leverkusen with what he had, so for this season too, everyone will continue to trust Xabi Alonso.